silver casting

Has anyone ever cast silver into cuttlefish bones/shell. Ihave a wax original which i dont want to lose in the lost wax process.

Posted by maninamousesuit 11 years ago


Lost wax casting help

I'm doing lost wax casting for a glass mold. I'm using parrafin wax to get the shape of it, but I was wondering what i could use to melt the wax out of the plaster of Paris once it's hardened. Also any advice regarding the whole lost wax process would be helpful!

Posted by Ehamby1219 2 years ago


Dangerman Casting

Discovery and Objective Productions UK are seeking a HOST with a strong science background (B.A. minimum) for DANGERMAN, a documentary-style reality series that replicates extraordinary stunts performed by daredevils, stuntmen and showmen and explains the scientific principles that make the most amazing feats possible. So what do you say? Anyone in the mood for some DANGER!?!http://portland.craigslist.org/wsc/sci/628816251.html

Posted by Tetranitrate 10 years ago


Plastic Resin Casting and Molding advice

Hi I'm making my first plastic resin cast and the mold for it using the tutorial here: http://www.b9robotresource.com/plastic_casting1.htm One difference to that tutorial however is that the object I am making a mold of is something I've make in air-dry modelling clay. I've spent quite a bit of time making the original so bit worried about pouring the silicone for the mold onto the clay object - will it break the clay down or is there some way to prepare the clay (varnish or something?). I've put a test of dried clay in water and it has broken down in five minutes. Can anyone who has done this sort of thing before advise please? Thanks in advance. Garrett

Posted by garrettlynch 7 years ago


discolored Pewter after casting

Hey everyone, I can't imagine that this question hasn't been asked before, but I must be using the wrong keywords.  I used a small electric crucible (for lead and pewter) to heat up pewter and pour it into a coin shaped plaster mold.  Truthfully, I'm pretty pleased with the level of detail, but I've got some 'burned' colored discoloration on the coins.  I've tried gently washing with soap and water which got off some of it. 1) am I doing something wrong to produce that coloring? 2) will silver polish clean it up, or will it damage the pewter?  (almost certain it will be fine, but thought I'd double check) Should I just be scrubbing harder with soap and water? For whatever reason, the image uploader isn't working.  I'll try to get one into the comments after I post this. many thanks!

Posted by oldmicah 5 years ago


is there a substance out there that once carved reduces in size.

Is there a substance out there that can be carved or moulded that can reduce in size keeping its proportions intact. i know you can get the reverse, a substance that can grow in size keeping proportions intact (Thanks Goodhart). I am trying to sculpt in miniature and its breaking my heart

Posted by maninamousesuit 10 years ago


Who wants to be on a Game Show?

I was just sent this link by a friend: Discovery Science Game Show Here is a brief description of the game show:Producers for a Discovery Science Game show are looking for contestants. Contestants can be a gonzo engineer/scientist or just a high-energy, creative, fun, builder!They are looking for garage warriors (builders, scientists, inventors, engineers, carpenters, welders, mechanics, architects, etc...) who love to invent new gadgets, build robots, racing power tools, weld together bizarre machines that drive, fly, climb, shoot flames or launch projectiles. This Game Show is for thinkers, dreamers and doers, who are eager to let their inner MacGyvers be seen and ready to collaborate with a team of other builders.It looks like it was made just for our kind!! Now, who is going to try to get a spot on this show? If you do, be sure to let us all know!

Posted by jeff-o 9 years ago


A question about Pewter casting

Hullo, just had a call from my mate who wants to do abit of pewter casting, now he had a very specific question about molds and the silicone to use, I had a look round but no one mentions a particular sort, I thought all silicone is silicone ... but decided to bring the question to the experts To make a silicone mold, for pewter casting, what sort of silicone should my friend use? He shall be making a belt buckle from what i gather. Thanks chaps Biggsy

Posted by Biggsy 7 years ago


Tongue and mouth model.

I work at a speech training center, and I need to illustrate how to make certain sounds. I thought the best way was to use an adjustable tongue and cheek model. Doesn't have to be a real replica of a tongue, just something to illustrate the tongue and cheek positions for different sounds. Needs to be adjustable. Any ideas? Thanks.

Posted by naim 8 years ago


Building small objects out of concrete

Hi all, I was wondering if i could get any pointers on mixing concrete, I have gone through the concrete mixing instructables already and have not found anything suitable and hence I am asking her. I want to formulate an open recipe to make concrete objects like the ones in the following links, http://fancycrave.com/concrete-desk-accessories/ http://www.ledindon.com/en/objets-design/9029-stylo-plume-beton-arme.php http://www.designboom.com/design/concrete-rollerball-pen-by-22-design-studio-at-designboom-shop/ They are mostly small objects where the wall thicknesses are quite small (maybe a few mm). I think it will be interesting to see a DIY approach to making a concrete composition that is strong in small thicknesses, i think a lot of cool objects can be made from it . I have tried the normal concrete mix with cement and sand but i am not able to get it strong enough at those small thicknesses. Can anyone please some suggestions or advice on how to go about this ?  Thanks in advance, please see attached files for some images taken from around the web, i do not own any of them.

Posted by varun2021 5 years ago


saleing cast iron castings for models

Monday foundry is a small jobbing foundry meaning we take in any small work and some larger. if you would like to have a part cast for something just ask ( motor houseings and other motor castings, custom tools, ect castings are NOT machined unless asked for; cost of machineing is almost double the cost of the part, (unless its as simple as drill a hole aka)

Posted by Danielro10 9 years ago


Machinable Clear Casting Resin

Hello, Does anyone know of a clear casting resin that when cured is also machinable?  I have an idea for a project that involves encasing objects in resin and then using power tools, milling machines, lathes, etc. to partially expose the object by cutting though it and the casting.  Any thoughts on what resin to use and where it can be purchased? Thanks!

Posted by WaffleM 4 years ago


Advice on lost wax casting

I am looking at the cheapest way to begin casting pewter with the lost wax casting or with creating rtv silicone molds and it looks like dental wax is generally the same as jeweller's wax. I would like to know if this product looks suitable for carving for lost wax casting: http://dentala2z.co.uk/PRE10379/en I would of course melt it to make blocks to carve from. It looks like it would do the job, carving wax seems to be really expensive in whatever form. Im also looking at using silicone and corn starch. thank you

Posted by lsadwdwadw 5 years ago


casting a section of a large sphere in polyester resin

Hello, all.  I bought a nice pendant lamp for my house several months back from one of the local big box stores on clearance.  I only got around to putting it up recently, and when I opened it (yes, I already feel stupid for not having opened it right away to check on it...), the main glass lamp shade was completely shattered! Sadly, the lamp was on clearance because it had been discontinued, and none of the stores in Canada have any of them in stock anywhere, so getting replacement is impossible. I really like the lamp, though, as it matches several of the other lights that my wife and I have purchased, so I figured that I would try my hand at making a replacement shade!  The shade is shaped as follows: it is a section of a sphere 19.5" across (the diameter of the section, not the of the entire sphere), and 5" deep.  A little math (x^2 + y^2 = 2yr) lets me know that the radius of the sphere that this shade is a section of is 12". Here is my plan, and I would like to know if I am crazy or if anyone has a better suggestion.  I am going to try to cast a replacement shade from polyester resin, 1/4" to 3/8" thick.  I was going to make a 2-piece mould from plaster, and use my wood router suspended from a gimbal (on a 12" radius arm) to cut the outer mould.  Similarly, I would suspend a plaster blank from the gimbal over my router (on a 11 5/8" radius arm) to cut the inner mould.  Then I would simply coat the two halves with mould release and pour/pump the resin into the gap between the halves.  I'll tint the resin with some dye to get it the amber colour that I want, then lightly sand to get a smoky translucent finish. My only questions are: 1)  will I be able to get this mould apart without destroying the resin casting, and 2) will polyester resin be strong enough for this kind of casting?  Another option would be to make a wooden mould, but I thought that I might be able to chip away a plaster mould, whereas a wooden mould would be a lot harder to get off of a stuck casting! Thanks!   PS, of course, if this works, I'll post an instructable of it!

Posted by roboguy 4 years ago


(newsletter) Inverted Bookshelf, Vortex Cannon, Face-Casting...

Oct 2, 2008 Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup1","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); } Welcome back!Enter your food hack into the Hungry Scientist Contest and win your choice of a Kitchen Aid mixer, a super nice knife set, or a Le Creuset Enamel Cast Iron Cook Set. Help us with your answers for our Burning Questions and win a cool prize pack!The Forbes Fabergé-Style Egg Contest still needs your eggs! Take an egg (real or fake) and decorate it inside and out in homage to the classic Faberge style. You can win a Sonos music system, and get your egg featured in the Forbes Galleries in New York City!Live near San Francisco or planning a trip? Stop by for one of our build nights and make something cool in our office! October 2: Intro to Chainmail; October 23: Halloween open build night.Upcoming...The DIY Halloween Contest officially launches tomorrow! Enter your costumes, decorations, gizmos, food, and jack-o-lanterns to win some awesome prizes! It's our biggest and best Halloween contest ever! Transmuted Victorian Journal by jktechwriter How to Make Vortex Cannons by Kipkay V10 Vertical Axis wind Turbine by faroun How to Pan For Gold by mdavis19 Vote for your favorites now! Show us your eggs! Make Limoncello by tellumo Sew Your Own Pajama Pants by compwalla Bush Knife with Wood Handle by 42ndOddity Portable Bike Trailer Solar Generator  by veggiecycle Book Binding: BSG Edition by gmjhowe Cast a Face in Plaster by rachel Make Butter by lbailey825 How to Throw a Punch by Isshinryu 10 ways to turn your home into a haunted destination Share your best food hacks! Make "Butterzopf" or Challah by t.rohner Knit Touchpad by Plusea Concrete Lamp by hands_on Inverted Bookshelf by fungus amungus Now go make something awesome, and I'll see you next week! - Eric Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; } window.open("/newsletter/newslettersignup?email=" + src.value,"newslettersignup2","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); }

Posted by fungus amungus 10 years ago


Rube Goldberg TV Show Casting Call

This sounds like fun:A new Discovery Channel show is looking for teams of ARTISTS, SCIENTISTS, ENGINEERS, ARCHITECTS and DESIGNERS with experience in building RUBE GOLDBERG MACHINES. (Thanks to BoingBoing for the link!)More details:This show shoots in January in Los Angeles so the application process will be moving quickly.Super Rubes is a weekly one-hour show that follows a band of talented creators as they design, build, and set off a massive Chain Reaction Machine in front of a cheering crowd. The point of a Chain Reaction Machine is to do something very simple, like turn on a light bulb, using as many steps as possible. This is an opportunity for engineers to let their creative hair down and have some fun building a giant Chain Reaction Machine. Our team will take on impossible challenges (i.e. , Can you crack an egg with a human hair?) in a race against the clock.We are looking for fun, interesting, charismatic and outgoing individuals of all ethnicities and types 25-39 years old to comprise a diverse team of people who are involved in engineering/building: This means architects, engineers, scientists, pyro-technicians, art directors/designers, even professors or hobbyists who are simply passionate about these topics. We don't need an expert in every area, just someone who loves to design and build.The team should be a mix of a skills, a mix of personality types, and have a playful, funny camaraderie, so if there are existing teams out there, all the better, or if couples/triples have worked together and want to present themselves as the start of a team, we are open to that too.

Posted by canida 10 years ago


Custom castings

Macaulay foundry is available for short run and one off castings in resin, fiberglass, aluminum, brass and iron. Please check us out at www.themacaulayfoundry.com or see us at www.youtube.com/macaulayman

Posted by macaulayman 10 years ago


Casting a REALLY complex HOLLOW shape with metal!?

Exactly like casting a 3D print out of metal; I have a airsoft upper receiver which I want to cast out of aluminium cheaply. Made of polymer and quite complex. http://www.evike.com/images/large/Mbody_GP_M4AEGUpper_lg.jpg

Posted by Digital Flame 3 years ago


Cast Stone, Outdoor Repoduction with Fiberglass

I would like to reproduce a hand rail made out of concrete, cast stone; any suggestions as to how I should go about reproducing the cast stone rail and baluster?

Posted by azalldesign 10 years ago


lost wax casting

Newkidontheblock. looking for authentic instuctions how to go about making lost wax castings of chess pieces (in aluminium )dozens of them ????

Posted by golodenboy6 10 years ago


Carve and cast moulds

Hello I was wondering if anyone was interested in buying the molds I created to make the cast and carve chocolates in my instructable.  https://www.instructables.com/id/Carve-an-cast-chocolate-treets/ It means you don't have to go through the pesky business of carving or making our own molds to end up with some fun chocolates.. or you could use something like plaster and end up with some nice casts. 

Posted by world of woodcraft 3 years ago


The Concrete and Casting Contest starts Monday, 7/29!

We're holding our first ever Concrete and Casting Contest, brought to you by the fantastic folks at CHENG Concrete! Over the years we've gotten so many concrete & casting projects and we just know you guys have tons more up your sleeves. Show us your best builds for a chance to win prizes from CHENG. Need some inspiration? Check out CHENG Concrete's projects here on Instructables. Check out the official contest page for more info. Contest is open 7/29 - 8/26.

Posted by jessyratfink 5 years ago


Project Runway Now Casting Designers

Project Runway is now casting for its 8th season!  Do you have what it takes to make it work? Strut your stuff on TV and get the entire Instructables community behind you to vote for your creations.  Find out more about the process here and get your applications in by April 22 - there's no time to lose!  Don't forget to share your awesome audition videos with us in the forums.  via: Bunim/Murray Productions

Posted by scoochmaroo 8 years ago


lost wax casting: what material is the best for pouring metal into?

So I made a rad Yoda wax figurine recently and I'm looking into converting him into a aluminum via the lost wax casting method. I've seen some other instructables on casting the metal into plaster of paris, but that doesn't seem to preserve the very fine details that I want. There are a few other methods I've seen on other forums, like mixing fine sand with plaster and making a ceramic mold...I have even wackier ideas like using fireproof cement, but I haven't seen anything online to support using it...what other ideas can you think of that don't involve expensive investment powders I have to buy online? 

Posted by jtrainer1 2 years ago


Aluminum Casting with 3D Prints

Is there any reliant and consist way to create high RPM gears using 3D prints? What I had planned to do is 3D print some gears out, make silicon molds out of them and then pouring wax in the silicon molds. I then would put the wax into sand and then pour molten aluminum into it. To me, it sounds good in theory but I thought somebody else might have tried making PLA 3D prints into metal.

Posted by rexdino5 3 years ago


silver casting mould

Anyone help me here..I have a wax master of a signet ring. If i use lost wax casting i will lose my original....This i do not want. Is there a mould making stuff that i can press the ring into leaving a negative to fill with silver.....

Posted by maninamousesuit 11 years ago


SELL

How can i sell in your site an aluminium cast foundry?

Posted by anastasiakariotou 3 years ago


Print a cast for pewter molding

I have a 3D model that I would like to have printed so I can use it as a cast for a pewter mold. It is a simple pin that I designed in 3DSMax.. Would the cast have to be metal, or is there some plastic/poly that would take the heat of molten pewter?  I don't want to have to pay a jeweler to do this, I already have the model in 3D, it seems like it should be easy to print a cast so I can make them myself..

Posted by 3DPiper 5 years ago



Request for "Casting in Bondo" Tutorial

I've been trying to find a thorough and detailed introduction to casting in Bondo for a while but have found nothing definitive. Could someone make a beginners guide for using Bondo to make replicas and casts w/ Pictures?

Posted by kojimagtr 10 years ago


Using an inkjet to print water based glue?

I am thinking about playing with an inkjet printer to print 3d sand casting molds. To save time, I won't be too specific in my design, but I basically want to modify an inkjet to print a water based glue onto layers of sand to create sand casting molds like the 3d printer in this video: http://www.youtube.com/watch?v=Z8MaVaqNr3U Someone also made a crude version of what I want in this video: http://www.youtube.com/watch?v=2nbtZOolSIY&feature;=player_embedded My theory is that if an inkjet printer heats up the water in the ink creating a bubble of steam to push the rest of the ink out, wouldn't the same concept apply to a water based glue if you put that in the inkjet? So here are my questions: 1) Would it be possible to put water based glue in an inkjet and have it print it? 2) Are water based glues are ok to use in sand casting molds? Tell me what you think and thanks for your input. 

Posted by sourcesmith 6 years ago


Lost Foam?

Hi guys, I've been messing about with lost foam aluminium casting here in the UK. I've tried packing expanded polystyrene, and Jablite but they seem really difficult to get a good finish on the foam patterns. I want to be able to machine them, or use them in a basic foam lathe. I know that in the States they have a denser finer grained insulation material (blue and pink in colour). These both seem to be better for obtaining surface finish. I've tried to Google the stuff over here but it seems to be silly prices. Does anyone have any links to UK sites that sell a similar product? I was wondering if the harder stuff that you saw up and stick between the rafters for loft conversions would work as this seems a much denser fine grain foam to me. Any ideas or advice would be appreciated.

Posted by marshon 8 years ago


Reusing Plaster of Paris?

...or simply plaster, is a type of building material based on calcium sulfate hemihydrate... It is created by heating gypsum to about 150°C....When the dry plaster powder is mixed with water, it re-forms into gypsum...So...if I heated the gypsum to +302F (150C), it would turn back into plaster of paris, to be reused agian? Of course you would need to powder the used plaster (gypsum), but would it work?

Posted by John Smith 11 years ago


My kid broke his arm, is getting a cast tomorrow, should I try to add some LED's?

My 6 year old broke his arm on friday night, they can't do a fiberglass cast until tomorrow. I was thinking what if I prewired an ultra bright LED and ask them to wrap it into the cast with just the led poking out. I was thinking I could decorate his cast to look like Buzz Lightyear's arm with a "laser". The wire could come out the top that I could connect a battery pack to so he can turn it on and off. Is this a good idea or not too smart? I'm trying to think of ways to make my son feel a little better about having a cast for 8 weeks.

Posted by tonythemediaguy 5 years ago


WILL CONCRETE STICK TO CAST IRON OR ENAMEL as in bathtub

Hi everyone.  This is my very first Instructables experience - I've just found you guys.  I'm wanting to know if I could resurface my old cast iron enamel bath with concrete??  Would it stick???

Posted by CraftyCarolyn 3 years ago


How to make custom dental tray?

Greetings, There is an instructable on how to make a cast of teeth. https://www.instructables.com/id/Cast-Your-Teeth-for-Halloween/ I would like to know how to make dental trays from the casting to use for teeth whitening instead of the generic trays that come in whitening kits. Thanks

Posted by NeuroPulse 3 years ago


Making a mold.

I am trying to make a fascia panel for a car. In order to do that I need to make a cast of one of the voids in a panel, from a vehicle console, since it can't be measured easily. I want to make the cast so that I can then make an accurate template from which I can make the panel I need. I am looking for a material that is non-destructive to the plastic panel that contains the void. That will create a rigid solid replica of the void. I know nothing about making molds and casts. Thanks in advance.

Posted by ucs308 3 years ago


Sea Fishing tactics?

So...I go fishing for mackerels a lot. I normally use feathers and weights. What do you use? floats? nets? and what type of bait do you use? 

Posted by NXTHacker 6 years ago


Mold venting for lost foam metal casting

I've been casting small aluminum statues using the "lost Foam " technique. My success rate has been about 60%t070%because of the aluminum freezing in the long narrow parts of the mold. The statues are human figures so the outstretched arms and legs sometimes are not complete. Am now considering heating the mold to reduce this problem. Any suggestions will be appreciated

Posted by blindpig 9 years ago


Remelting Plastics

Has anyone experienced remelting plastics from around the house/recycling bin in order to cast objects? After reading about the backyardfoundry for aluminun and such, I realized that I'm much more interested in plastic and casting plastic parts and art things. Also, it could be cheap and plentiful. I have the moldmaking knowledge for aluminun and bronze but want a plastic medium for the casting material so I can work at home/backyard without the foundry equipment.

Posted by Bug2k 10 years ago


Non Polyester Clear Casting Resin

Hi I am interested in using silicon molds for jewelry and other "craft" projects. From reading your site, I learned that this could be done w/o worrying about the resin sticking to the mold if you use a non polyester clear casting resin. Since I am new to this whole arena, I wanted to know where I could purchase such a product. Thank you. MGW

Posted by mgw 10 years ago


NES Bedding, Apple Cider Donuts, Metal Casting with Sugru

NES Bedding Apple Cider Donuts Metal Casting with Sugru Hand Lights Dr. Who Inspired Watch Green Tomato Chutney Creepy UV Sun Jar Ultimate Parts Storage Bike Part Belt Make a Dragon Skull Networked Sprinkler Controller Bent Wood Rings LED Monitor Backlight Read Credit Cards Wireless Altoids Display

Posted by randofo 8 years ago


Softening Candle Wax (lost wax casting)

Well, I made my first lost wax casting yesterday using lead, and a Plaster of Paris mold. It worked great, except that I didn't have enough lead. But, after searching on the great web, I realized that the wax I used was much harder than what the sculptors use. Why is this? Is it a different type of wax? I searched Google, and couldn't find anywhere to get the wax I needed. Maybe I typed in the wrong name. I don't know. I'd much rather use my own wax, as my mom has a stockpile of large-er sized candles that softened and deformed in the Florida sun. How would I soften it, other than heating it in water? Is that water method thing how they normally do it? I'm really into melting metal, and want to do more casting, so can someone help?

Posted by John Smith 11 years ago


welding cast iron to mild steel

Welding cast iron to mild steel is for the most part done with ornamental iron such as gates and fences. the ornaments are typicaly cast iron such as spearpoints and fit over the top of what ever square tubing size ect you are working with. If you weld say with a mig welder in the normal mannor you rweld will cold roll and ball on you leaving a poor appearance that you will have to spend time grinding to make look good. Fortunatly it is not a matter of strenght or how much penetration ect. It is just ornamentation but must look good. Now take your mig welder with say 035 wire and use pure argon..(less spatter). Turn your welders heat up somewhat past what your normanl setting would be for what ever thickness you are using. Use breif spot welding like techniques overlapping as needed. You will find that this makes a good wash bead with no undercut or cold roll. The argon gas helps to keep down all the extra spatter welding cast iron to mild steel seems to cause. Larger peices such as caps for say 4by4 gate posts or fence posts, i preheat as uniformely as possibly to just under cherry red then weld as described. It welds badly because cast iron is actualy dirty, literaly with particles of dirt in the cheap castings, wich the ornaments are. Not haviong the need to be anealed or nodular for instance. If the welds are not going to show then you dont have to do this. It will still weld, just do not expect the clean perfect welds you are used to.  And NO I do not have PICS AND I dont own a digital camera nor do i know how to use one let alone put them on a computer.

Posted by beserker 6 years ago


Casting Call: Everyday Edisons in San Jose, Dallas, Chicago

The PBS show Everyday Edisons is holding casting calls for Season 3!Bring your idea or product and the paperwork, and present it to the judges in two minutes. Here's a useful FAQ.From their website:We consider concepts of all levels, whether it's just an idea, a prototype, a finished product, a patented idea, etc. -- all are welcome. There is no age requirement, but children under the age of 18 must be accompanied by a legal guardian. DatesSan Jose, CA - This Saturday, Feb 16 2008. Doors open at 7am at the McEnery Convention Center. Dallas - Saturday, March 15, 2008.Chicago - Saturday, April 9, 2008.Northeast, location TBD - Saturday, May 17, 2008

Posted by canida 10 years ago


Some hints at making stuffed animals and casting resin

I posted a web album that goes through some of the process designing a plush animal and adding resin parts to it. It isn't super though rough, but might be helpful to some. Feel free to ask questions!Mr. Blue's Web Album

Posted by goosezilla 9 years ago


Is oogoo (DIY Silicone Putty) Oven-safe?

Hello! I have a question for people who use oogoo, or generally DIY silicone molding putty made from 100% silicone caulk. I want to cast oogoo molds of lego bionicle masks with polymer clay, but my issue is I need to keep the clay inside the mold in order to prevent any kind of warping, as most of it is spread a little thin (1-2mm thickness) and I don't want to end up warping it even in the slightest. Is oogoo or cured 100% silicone caulk oven-safe as long as it's within the specified temperature range? (I already know most DIY silicone putties aren't food-grade.) The silicone caulk I'm using is GE all purpose silicone I, mixed with corn starch, acrylic paint, and baby oil. The back of the tube says that it should not be used on surfaces that will exceed 400F/205C. The polymer clay I plan on using is cured at 110C, so I don't think it'll be a problem, but I'm worried exposing the silicone caulk mold to high temperatures will cause it to release some harmful chemical compounds. I looked up an MSDS sheet for GE silicone, and they had a generalized one stating exceeding the maximum temperature will cause the release of formaldehyde. Since I plan on baking these in our kitchen oven, I wouldn't want harmful chemicals contaminating a space where we cook our food. Also, if baking isn't an option, since the polymer clay is spread thin, and cures close to 100C, would curing it in boiling water be an option? (That way any water soluble chemicals would remain contained while the clay hardens.) All help is appreciated!

Posted by SixFootBlue 3 years ago


Iron Man

Hello. No one seems to have done anything in this group at all since inception. That honestly sucks, as I was hoping that someone would have put in some time and at least come out with some sketches, or put their thoughts down on paper. Well I am not one to complain without doing something about the problem. First up is the issue of powered movement. That is the core of Iron Man's super strength. You have 3 real options here. Hydraulic, Stepper Motor, or Servo Motor. I have filtered out hydraulic simply because it is not as easy to work with as the other electrical motors. I found a comparison chart, and a link to it is posted below. http://www.legacycncwoodworking.com/stepper-vs-servo-motors/ Based on the information it contained, I would say that a stepper motor is the most efficient way to go. It takes more power to run, and generates more heat, but neither of those problems is difficult to deal with. Heat syncs, and a propane/natural gas generator will solve both of those problems readily. The next problem is the exoskeleton, the armored body of Iron Man. I have looked into materials, and the difficulty in casting them, or machining them. ZA, or Zinc Aluminum alloys seem to be the way to go. They are relatively easy to make, requiring only about 900F to melt them, they cast extremely well, and they make extremely fine detailed castings. When they set up, they have hardness equivalent to that of Cast Iron. They also lend themselves readily to sand casting, mold casting, and to graphite casting. Alright, I have put my 2 cents in. Lets hear from the rest of you.

Posted by xarlock667 7 years ago


Are you a fan of Top Gear? - BBC Casting for new car mod show

Are you a fan of the show TOP GEAR? BBC Worldwide Productions has a new car customizing competition series that is casting in Southern California! We are looking for teams of two to transform their own ordinary cars into the most extreme madcap vehicles, before putting them through their paces in off the wall and outrageous challenges. You bring the personality and car, we'll do the rest. All you need is a great personality and a great story about your car, and you'll have a chance to win ultimate bragging rights and a cash prize. To meet with casting directors in July, email the following information on both you and your teammate, reply to: bbccarchallenge@gmail.com - Names of team members - Occupations - Hometown - Brief description of your relationship to each other - Brief description of your relationship to the car - Photo of each team member - Photo of the car

Posted by TopGearhead 6 years ago


Podcast: CA Rule casts Shade on Solar Panels

Day to Day, October 27, 2008 Solar panels are this season's must-have construction accessory in Southern California. But there's a regulatory roadblock. Green boosters say one more state rule needs to change if solar is going to be anything bigger than a flash in the pan....Link to Podcast download

Posted by Goodhart 9 years ago